I have a general question, which may help AZORCH in this instance. How do you go about ensuring the proper angle on filed cotter pin? The trial & error technique I've used is to press in the cotter, pull out, and look for any marks on the pin. If there are any marks, file that area down and repeat until no marks (i.e. flush fit). It's also been suggested to me that one can use a sharpie pen on the cotter surface to help see the marks. Randy Jawa made this nice write-up on how to use magnets to ensure the same angle on both cotter pins. I suspect the issue here may be that the angle of the filing is either not 100% flush, or not 100% flat. So, again, anyone wish to share tips or techniques for getting the proper angle on filed cotter pins?

P.s. Give me small-batch IPA over Stella any day.